Railway-car brake.



No. 838,774. PATENTEDDEG. 18, 1906. S. A. GRONE.

RAILWAY OAR BRAKE. APPLICATION 211.111) we. a, 1905. ammwnn we. 27,1906.-

55 46 42 I 47 r ag u-' FIG. 7 5

WITNESSES:

a'IA/VENTOR Br ZZZ ATTORNEY THE mmms PETERS cm, wumucrou, n. c

UNHED sTaTns PATENT @FFIGIFZ.

RAlLWAY CAR BRAKE.

Specification of Letters Patent.

Patented Dec. 18, 1906.

Application filed August 9,1905. Renewed August 27, 1906. Serial No.332,204.

To all whom it may concern:

Be it known that I, SETH A. CRONE, a citi zen of the United States, anda resident of New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in Railway-CarBrakes, of which the following is a specification.

The invention relates to improvements in railway-car brakes; and itconsists in the novel brake-shoe head hereinafter described, andparticularly pointed out in the claims.

The object of the invention is to provide a highly-efficient, durable,and safe brake-shoe head capable of economical manufacture, and to thisend in the preferred construction I construct the head with a malleablecast back and a forged-metal face, the two parts being secured togetherand forming between them a guideway for the key by which the shoe may beconnected with said head. In all embodiments of my invention the face ofthe head will be formed of forged metal and secured to the back, andbetween said face and back will be provided the guideway for the key bywhich the shoe will be fastened in place against said face.

The invention will be fully understood from the detailed descriptionhereinafter presented, reference being had to the accompanying drawings,in which Figure 1 is a side elevation of a brake-shoe head constructedin accordance with and embodying my invention, the brake-shoe beingshown in position thereon. Fig. 2 is an edge view of same looking at theright-hand side of Fig. 1. Fig. 3 is a top view of same. Fig. 4 is adetached side view of the malleable back of the brake-shoe head. Fig. 5is a corresponding view of the forged-metal face-plate of said head.Fig. 6 is a face view of same. Fig. 7 is a top view of same, and Fig. 8is a detached inner face view of the malleable back of the head.

The brake-shoe head shown comprises a malleable-iron back 40 and aforged-metal face-plate 41, said back 40 in the special form shownhaving the diagonally-disposed jaws 33 for the brake-lever, (not shown,)an

eye 42 to receive the usual hanger, (not shown,) and an eye 43 toreceive the end of a transverse stay-rod in instances in which such rodmay be used for connecting the heads at opposite sides of a truck, as inbeamless car-brake systems. The face of the malleable back 40 receivesthe forgedmetal face-plate 41, and said back 40 is formed in its facewith a recess 44, into which I face-plate 41, tending to move itlaterally from the back 40.

At each side of a vertical web 47, formed on the back 40, the latter isprovided with apertures 48, through which rivets or bolts 49 may passfor securing the plate 41 to said back, said apertures 48 being aboveand below the securing-jaws 33, so that upon any break through the backabout said jaws no part of the back may fall to the track, the plate 41holding the then fractured parts of the back together." Those portionsof the back 40 at the sides of the web 47 and through which therivet-apertures 48 pass are thickened, as shown in Figs. 1 and 2, forthe purpose of securing additional strength at said points. The upperend of the back 40 is of considerable thickness, so as to provide forstrength about the eye 42, which extends transversely through the entirewidth of said back. The eye 43 need only extend through a lug formed onthe back 40, as indicated in Fig. 2.

In the inner face of the back 40 is formed the box-recess 44,hereinbefore described, and also a vertical recess or keyway 50 toreceive the key 51, by which the brake-shoe 34 may be secured to thehead. The keyway 50 is not as deep as the box-recess 44, and hence whenthe loop 45 of the plate 41 is in said recess the key 51 may passthrough the slots 52, formed in the upper and lower sides of said loop.The flanges 46, closing the opposite sides of the recess 44, setoutwardly from the main side surfaces of the back 40 as shown in Fig. 8,so that the plate 41 may have a uniform width from end to endcorresponding with the general width of the back 40 and its loop 45 bereceived within said recess. At its upper end the inner face of the back40 is inclined outwardly, as denoted at 35, and at the opposite sides ofthis inclined portion said face is formed with the flanges 36, againstwhich the upper portion of the plate 41 seats and between which theupper flanges 55 on said plate pass.

The form and details of the forged-metal plate 41 are shown in Figs. 5,6, and 7, in which it will be seen that the plate is formed withapertures 37 in line with the apertures 48 in the back 40 for the rivets49. At its upper and lower ends the plate 41 is formed with the verticalrecesses 54, at the sides of which are the flanges 55, these flangesforming integral angle-sections and being formed from metal displaced inmaking the recesses 54. The flanges 55 notonly strengthen the ends ofthe plate 41, but receive between therri the end portions of the key 51.

The brake-shoe 34 is of standard type and is recessed to receive theplate 41 and also provided with the vertically-apertured lug 53, throughwhich the key 51 passes, as usual.

The brakeshoe head, therefore, comprises the back 40 and forged-metalface-plate 41, secured thereto, said plate 41 form ng the face of saidhead and engaging the brakeshoe, and the head thus composed iscomparatively simple and inexpensive of manufacture and durable andhighly efficient.

In the head constructed as above described the key 51 extends along theforgedmetal face-plate 41 and at its middle portion passes into lockingengagement with said plate and the shoe 34. The key 51 is securely heldby the plate 41 and back 40, and said plate not only effectively holdsthe shoe 34, but increases the strength of the back 40 and reduces theelement of danger due to any fracture of said back, said plate beingsecured to said back at different points and adapted to hold togetherthe parts of said back in case the same should become broken.

The diagonally-disposed jaws 33 are not essential features of thehead,"since said jaws will only be arranged diagonally when the 4 headsare used in. a beamless-car-brake system of the character disclosed inanapplicati'on filed by me herewith for Letters Patent for the same. Thejaws 33 will therefore be arranged to suit the particular system inwhich the heads may be employed and the character of levers or beams towhich they are to be connected.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A brake-shoe head comprising a back having; in its face a recess, aforged-metal face-plate having a box-loop within said recess, and meanspermanently securing said face-plate to said back both above and belowsaid recess, a keyway being formed be tween said back and plate and saidloop being slotted in line with said keyway; substantially as set forth.

2. A brake-shoe head comprising a back having in its face a recess andabove and below said recess a vertical groove constituting a keyway, aforged-metal face-plate adapted to c'losethe' face of said groove andhaving a box-loop within said recess, and means permanently securingsaid face-plate to said. back both above and below said recess, saidbox-loop being slotted in line with said groove toform a part of thekeyway; substantially as set forth.

3. A brake-shoe head comprising a cast back having a recess in its face,a forged metal plate adapted to said face and having a box-loop withinsaid recess and provided with slots to receive the shoe-securing key,and means permanently securing said. plate to said back both. above andbelow said recess, a keyway being formed between said back and plate inline with the slots insaid box-loop and having for its outer wall saidplate and its inner wall said back, whereby the force exerted by the keyat the center of the head and in a direction toward the shoe is whollyagainst the forged-metal plate; substantially as set forth.

4. A'brake-shoe head comprising a back having in its face the recesswalled in'at opposite side edges by flanges and also having the keywayabove and below said recess, and a forged metal face-plate secured tosaid face and having the box-loop to enter said recess and slotted atits upperand lower sides in line with said keyway; substantially as setforth.

5. A brake-shoe head comprising a back having in its face a recess andabove and below said recess the keyway, and a forgedmetal face-platesecured thereto and having the box-loop to enter said recess and slottedat its upper and lower sides in line with said keyway, said plate alsohavin at its end portions the integral vertical flanges; substantiallyas set forth.

6. A brake-shoe head comprising a back having in its face a recess, aforged-metal face-plate having a box-loop within said recess, and meanspermanently securing said face-plate to said back both. above and belowsaid recess and at each side of the vertical center of said back, akeyway being formed between said back and plate and said loop beingslotted in line with said keyway; substantially as set forth.

7. A brake-shoe head comprising a back wherein is formed a keyway, and aseparate forged-metal face-plate secured thereto and having a box-loopentered in between the end portions of said back and slotted in linewith said keyway, said plate also having at its end portions theintegral vertical flanges; substantially as set forth.

8. A brake-shoe head comprising a castmetal back having in its face arecess and above and below said recess a vertical roove I constituting akeyway, a forged-metal face plate closing the face of said groove andhaving a box-loop within said recess, and means permanently securingsaid faceplate to said back both above and below said recess and at eachside of the vertical center of said back,

said box-loop being slotted in line with said groove to form a part ofthe keyway; substantially as set forth.

9. A brake-shoe head comprising the back having in its face a recess andabove and below said recess a keyway, the upper end of said back beinginclined upwardly and outwardly from its face and provided at oppositesides of said portion with edge flanges,

and a forged-metal face-plate secured to said back and having thebox-loop to enter said recess and slotted at its upper and lower sidesin line with said keyway, said plate also having at its upper end theintegral vertical flanges entering in between said edge flanges;substantially as set forth.

